#!/usr/bin/python
# -*- coding: utf-8 -*-

DOCUMENTATION = '''
---
module: oracle_db
short_description: Manage an Oracle database
description:
	- Create/delete a database using dbca
	- If a responsefile is available, that will be used. If initparams is defined, those will be attached to the createDatabase command
	- If no responsefile is created, the database will be created based on all other parameters
version_added: "2.4.0.0"
options:
	oracle_home:
		description:
			- The home where the database will be created
		required: False
		aliases: ['oh']
	db_name:
		description:
			- The name of the database
		required: True
		default: None
		aliases: ['db','database_name','name']
	sid:
		description:
			- The instance name
		required: False
		default: None
	db_unique_name:
		description:
			- The database db_unique_name
		required: False
		default: None
		aliases: ['dbunqn','unique_name']
	sys_password:
		description:
			- Password for the sys user
		required: False
		default: None
		aliases: ['syspw','sysdbapassword','sysdbapw']
	system_password:
		description:
			- Password for the system user
			- If not set, defaults to sys_password
		required: False
		default: None
		aliases: ['systempw']
	dbsnmp_password:
		description:
			- Password for the dbsnmp user
			- If not set, defaults to sys_password
		required: False
		default: None
		aliases: ['dbsnmppw']
	responsefile:
		description:
			- The name of responsefile
		required: True
		default: None
	template:
		description:
			- The template the database will be based off
		required: False
		default: General_Purpose.dbc
	cdb:
		description:
			- Should the database be a container database
		required: False
		default: False
		aliases: ['container']
		choices: ['True','False']
	datafile_dest:
		description:
			- Where the database files should be placed (ASM diskgroup or filesystem path)
		required: False
		default: False
		aliases: ['dfd']
	recoveryfile_dest:
		description:
			- Where the database files should be placed (ASM diskgroup or filesystem path)
		required: False
		default: False
		aliases: ['rfd']
	storage_type:
		description:
			- Type of underlying storage (Filesystem or ASM)
		required: False
		default: FS
		aliases: ['storage']
		choices: ['FS','ASM']
	dbconfig_type:
		description:
			- Type of database (SI,RAC,RON)
		required: False
		default: SI
		choices: ['SI','RAC','RACONENODE']
	db_type:
		description:
			- Default Type of database (MULTIPURPOSE, OLTP, DATA_WAREHOUSING)
		required: False
		default: MULTIPURPOSE
		choices: ['MULTIPURPOSE','OLTP','DATA_WAREHOUSING']
	racone_service:
		description:
			- If dbconfig_type = RACONENODE, a service has to be created along with the DB. This is the name of that service
			- If no name is defined, the service will be called "{{ db_name }}_ronserv"
		required: False
		default: None
		aliases: ['ron_service']
	characterset:
		description:
			- The database characterset
		required: False
		default: AL32UTF8
	memory_percentage:
		description:
			- The database total memory in % of available memory
		required: False
	memory_totalmb:
		description:
			- The database total memory in MB. Defaults to 1G
		required: False
		default: ['1024']
	nodelist:
		description:
			- The list of nodes a RAC DB should be created on
		required: False
	amm:
		description:
			- Should Automatic Memory Management be used (memory_target, memory_max_target)
		required: False
		Default: False
		choices: ['True','False']
	initparams:
		description:
			- List of key=value pairs
			- e.g
			  init_params:
				  - sga_target=1G
				  - sga_max_size=1G
		required: False
	customscripts:
		description:
			- List of scripts to run after database is created
			- e.g
			  customScripts:
				  - /tmp/xxx.sql
				  - /tmp/yyy.sql
		required: False
	default_tablespace_type:
		description:
			- Database default tablespace type (DEFAULT_TBS_TYPE)
		default: smallfile
		choices: ['smallfile','bigfile']
	default_tablespace:
		description:
			- Database default tablespace
		default: smallfile
		required: False
	default_temp_tablespace:
		description:
			- Database default temporary tablespace
		required: False
	archivelog:
		description:
			- Puts the database is archivelog mode
		required: False
		default: false
		choices: ['True','False']
		type: bool
	force_logging:
		description:
			- Enables force logging for the Database
		required: False
		default: false
		choices: ['True','False']
		type: bool
	supplemental_logging:
		description:
			- Enables supplemental (minimal) logging for the Database (basically 'add supplemental log data')
		required: False
		default: false
		choices: ['True','False']
		type: bool
	flashback:
		description:
			- Enables flashback for the database
		required: False
		default: false
		choices: ['True','False']
		type: bool
	state:
		description:
			- The intended state of the database
		default: present
		choices: ['present','absent']
	hostname:
		description:
			- The host of the database if using dbms_service
		required: false
		default: localhost
		aliases: ['host']
	port:
		description:
			- The listener port to connect to the database if using dbms_service
		required: false
		default: 1521



notes:
	- cx_Oracle needs to be installed
requirements: [ "cx_Oracle" ]
author: Mikael Sandström, oravirt@gmail.com, @oravirt
'''

EXAMPLES = '''
# Create a DB (non-cdb)
oracle_db:
	oh=/u01/app/oracle/12.2.0.1/db1
	db_name=orclcdb
	syspw=Oracle_123
	state=present
	storage=ASM
	dfd=+DATA
	rfd=+DATA
	default_tablespace_type: bigfile


- hosts: all
  gather_facts: true
  vars:
	  oracle_home: /u01/app/oracle/12.2.0.1/db1
	  dbname: orclcdb
	  dbunqname: "{{ dbname}}_unq"
	  container: True
	  dbsid: "{{ dbname }}"
	  hostname: "{{ ansible_hostname }}"
	  oracle_env:
			 ORACLE_HOME: "{{ oracle_home }}"
			 LD_LIBRARY_PATH: "{{ oracle_home }}/lib"
	  myaction: present
	  rspfile: "/tmp/dbca_{{dbname}}.rsp"
	  initparameters:
				- memory_target=0
				- memory_max_target=0
				- sga_target=1500M
				- sga_max_size=1500M
	  dfd: +DATA
	  rfd: +FRA
	  storage: ASM
	  dbtype: SI
	  #ron_service: my_ron_service
	  #clnodes: racnode-dc1-1,racnode-dc1-2
  tasks:
  - name: Manage database
	oracle_db:
		   service_name={{ dbname }}
		   hostname={{ hostname}}
		   user=sys
		   password=Oracle_123
		   state={{ myaction }}
		   db_name={{ dbname }}
		   sid={{ dbsid |default(omit)}}
		   db_unique_name={{ dbunqname |default(omit) }}
		   sys_password=Oracle_123
		   system_password=Oracle_123
		   responsefile={{ rspfile |default(omit) }}
		   cdb={{ container |default (omit)}}
		   initparams={{ initparameters |default(omit)}}
		   datafile_dest={{ dfd }}
		   recoveryfile_dest={{rfd}}
		   storage_type={{storage}}
		   dbconfig_type={{dbtype}}
		   racone_service={{ ron_service|default(omit)}}
		   amm=False
		   memory_totalmb=1024
		   nodelist={{ clnodes |default(omit) }}
	environment: "{{ oracle_env }}"
	run_once: True
'''
import os, re, time

try:
	import cx_Oracle
except ImportError:
	cx_oracle_exists = False
else:
	cx_oracle_exists = True


def get_version(module, msg, oracle_home):
	command = '%s/bin/sqlplus -V' % (oracle_home)
	(rc, stdout, stderr) = module.run_command(command)
	if rc != 0:
		msg = 'Error - STDOUT: %s, STDERR: %s, COMMAND: %s' % (stdout, stderr, command)
		module.fail_json(msg=msg, changed=False)
	else:
		return stdout.split(' ')[2][0:4]


# Check if the database exists
def check_db_exists(module, msg, oracle_home, db_name, sid, db_unique_name ):

	if sid is None:
		sid = ''
	if gimanaged:
		if db_unique_name != None:
			checkdb = db_unique_name
		else:
			checkdb = db_name
		command = "%s/bin/srvctl config database -d %s " % (oracle_home, checkdb)
		(rc, stdout, stderr) = module.run_command(command)
		if rc != 0:
			if 'PRCD-1229' in stdout: #<-- DB is created, but with a different ORACLE_HOME
				msg='Database %s already exists in a different home. Stdout -> %s' % (db_name, stdout)
				module.fail_json(msg=msg, changed=False)
			elif '%s' % (db_name) in stdout: #<-- db doesn't exist
				return False
			else:
				msg = 'Error: command is  %s. stdout is %s' % (command, stdout)
				return False
		elif 'Database name: %s' % (db_name) in stdout: #<-- Database already exist
			return True
		else:
			msg = '%s' % (stdout)
			return True
	else:
		existingdbs = []
		oratabfile = '/etc/oratab'
		if os.path.exists(oratabfile):
			with open(oratabfile) as oratab:
				for line in oratab:
					if line.startswith('#') or line.startswith(' '):
						continue
					elif re.search(db_name +':', line) or re.search(sid +':', line):
						existingdbs.append(line)

		if not existingdbs: #<-- db doesn't exist
			return False
		else:
			for dbs in existingdbs:
				if sid != '':
					if '%s:' % db_name in dbs or '%s:' % sid in dbs:
						if dbs.split(':')[1] != oracle_home.rstrip('/'): #<-- DB is created, but with a different ORACLE_HOME
							msg = 'Database %s already exists in a different ORACLE_HOME (%s)' % (db_name, dbs.split(':')[1])
							module.fail_json(msg=msg, changed=False)
						elif dbs.split(':')[1] == oracle_home.rstrip('/'):  #<-- Database already exist
							return True
				else:
					if '%s:' % db_name in dbs:
						if dbs.split(':')[1]!= oracle_home.rstrip('/'): #<-- DB is created, but with a different ORACLE_HOME
							msg = 'Database %s already exists in a different ORACLE_HOME (%s)' % (db_name, dbs.split(':')[1])
							module.fail_json(msg=msg, changed=False)
						elif dbs.split(':')[1] == oracle_home.rstrip('/'):  #<-- Database already exist
							return True


def create_db (module, msg, oracle_home, sys_password, system_password, dbsnmp_password, db_name, sid, db_unique_name, responsefile, template, cdb,
			  local_undo, datafile_dest, recoveryfile_dest, storage_type, dbconfig_type, racone_service, characterset, memory_percentage, memory_totalmb,
			  nodelist, db_type, amm, initparams, customscripts, datapatch, domain):

	initparam = ' -initParams '
	paramslist = ''
	scriptlist = ''

	command = "%s/bin/dbca -createDatabase -silent " % (oracle_home)
	if responsefile != None:
		if os.path.exists(responsefile):
			command += ' -responseFile %s ' % (responsefile)
		else:
			msg='Responsefile %s doesn\'t exist' % (responsefile)
			module.fail_json(msg=msg, changed=False)

		if db_unique_name is not None:
			initparam += 'db_name=%s,db_unique_name=%s,' % (db_name,db_unique_name)

		if domain is not None:
			initparam += 'db_domain=%s,' % domain

		if initparams is not None:
			paramslist = ",".join(initparams)
			initparam += '%s' % (paramslist)

		command += ' -gdbName %s' % (db_name)
		if sid != None:
			command += ' -sid %s' % (sid)
		if sys_password is not None:
			command += ' -sysPassword \"%s\"' % (sys_password)
		if system_password is not None:
			command += ' -systemPassword \"%s\"' % (system_password)
		else:
			system_password = sys_password
			command += ' -systemPassword \"%s\"' % (system_password)
		if dbsnmp_password is not None:
			command += ' -dbsnmpPassword \"%s\"' % (dbsnmp_password)
		else:
			dbsnmp_password = sys_password
			command += ' -dbsnmpPassword \"%s\"' % (dbsnmp_password)
		if dbconfig_type == 'RAC':
			if nodelist != None:
				nodelist = ",".join(nodelist)
				command += ' -nodelist %s ' % (nodelist)


	else:
		command += ' -gdbName %s' % (db_name)
		if sid != None:
			command += ' -sid %s' % (sid)
		if sys_password is not None:
			command += ' -sysPassword \"%s\"' % (sys_password)
		if system_password is not None:
			command += ' -systemPassword \"%s\"' % (system_password)
		else:
			system_password = sys_password
			command += ' -systemPassword \"%s\"' % (system_password)
		if dbsnmp_password is not None:
			command += ' -dbsnmpPassword \"%s\"' % (dbsnmp_password)
		else:
			dbsnmp_password = sys_password
			command += ' -dbsnmpPassword \"%s\"' % (dbsnmp_password)
		if template:
			command += ' -templateName \"%s\"' % (template)
		if major_version > '11.2':
			if cdb == True:
				command += ' -createAsContainerDatabase true '
				if local_undo == True:
					command += ' -useLocalUndoForPDBs true'
				else:
					command += ' -useLocalUndoForPDBs false'
			else:
				command += ' -createAsContainerDatabase false '
		if datafile_dest != None:
			command += ' -datafileDestination %s ' % (datafile_dest)
		if recoveryfile_dest != None:
			command += ' -recoveryAreaDestination %s ' % (recoveryfile_dest)
		if storage_type != None:
			command += ' -storageType %s ' % (storage_type)
		if dbconfig_type != None:
			if dbconfig_type == 'SI':
				dbconfig_type = 'SINGLE'
			if major_version == '12.2':
				command += ' -databaseConfigType %s ' % (dbconfig_type)
			elif major_version == '12.1':
				command += ' -databaseConfType %s ' % (dbconfig_type)
		if dbconfig_type == 'RACONENODE':
			if racone_service is None:
				racone_service = db_name+'_ronserv'
			command += ' -RACOneNodeServiceName %s ' % (racone_service)
		if characterset != None:
			command += ' -characterSet %s ' % (characterset)
		if memory_percentage != None:
			command += ' -memoryPercentage %s ' % (memory_percentage)
		if memory_totalmb != None:
			command += ' -totalMemory %s ' % (memory_totalmb)
		if dbconfig_type == 'RAC':
			if nodelist != None:
				nodelist = ",".join(nodelist)
				command += ' -nodelist %s ' % (nodelist)
		if db_type != None:
			command += ' -databaseType %s ' % (db_type)
		if amm != None:
			if major_version == '12.2':
				if amm == True:
					command += ' -memoryMgmtType AUTO '
				else:
					command += ' -memoryMgmtType AUTO_SGA '
			elif major_version == '12.1':
				command += ' -automaticMemoryManagement %s ' % (str(amm).lower())
			elif major_version == '11.2':
				if amm == True:
					command += ' -automaticMemoryManagement '
		if customscripts is not None:
			scriptlist = ",".join(customscripts)
			command += ' -customScripts %s ' % (scriptlist)
		if db_unique_name != None:
			initparam += 'db_name=%s,db_unique_name=%s,' % (db_name,db_unique_name)
		if initparams != None:
			# paramslist = ",".join(initparams)
			# initparam += ' %s' % (paramslist)
			initparam += ' %s' % (initparams)

	if initparam != ' -initParams ' or paramslist != "":
		command += initparam

	# msg = "command: %s" % (command)
	# module.fail_json(msg=msg, changed=False)
	(rc, stdout, stderr) = module.run_command(command)
	if rc != 0:
		msg = 'Error - STDOUT: %s, STDERR: %s, COMMAND: %s' % (stdout, stderr, command)
		module.fail_json(msg=msg, changed=False)
	else:
		if output == 'short':
			return True
		else:
			verbosemsg = 'STDOUT: %s,  COMMAND: %s' % (stdout, command)
			verboselist.append(verbosemsg)
			return True,verboselist
			# module.exit_json(msg=verbosemsg, changed=True)

	# elif rc == 0 and datapatch:
	#     if run_datapatch(module, msg, oracle_home, db_name, db_unique_name, sys_password):
	#         return True
	# else:
	#     return True

# def run_datapatch(module, msg, oracle_home, db_name, db_unique_name, sys_password):
#
#     cursor = getconn(module,msg)
#     sid_sql = 'select instance_name from v$instance'
#     sid_ = execute_sql_get(module,msg,cursor,sid_sql)
#     os.environ['ORACLE_SID'] = sid_[0][0]
#
#     if major_version > '11.2':
#         command = '%s/OPatch/datapatch -verbose' % (oracle_home)
#         (rc, stdout, stderr) = module.run_command(command)
#         if rc != 0:
#             msg = 'Error - STDOUT: %s, STDERR: %s, COMMAND: %s' % (stdout, stderr, command)
#             module.fail_json(msg=msg, changed=False)
#         else:
#             return True
#     else:
#         datapatch_sql = '''
#         connect / as sysdba
#         @?/rdbms/admin/catbundle.sql psu apply
#         exit
#         '''
#         sqlplus_bin = '%s/bin/sqlplus' % (oracle_home)
#         p = subprocess.Popen([sqlplus_bin,'/nolog'],stdin=subprocess.PIPE,
#         stdout=subprocess.PIPE,stderr=subprocess.PIPE)
#         (stdout,stderr) = p.communicate(datapatch_sql.encode('utf-8'))
#         rc = p.returncode
#         if rc != 0:
#             msg = 'Error - STDOUT: %s, STDERR: %s, COMMAND: %s' % (stdout, stderr, datapatch_sql)
#             module.fail_json(msg=msg, changed=False)
#         else:
#             return True

def remove_db (module, msg, oracle_home, db_name, sid, db_unique_name, sys_password):

	cursor = getconn(module,msg)
	israc = ''
	israc_sql = 'select parallel,instance_name,host_name from v$instance'
	israc_ = execute_sql_get(module,msg,cursor,israc_sql)
	remove_db = ''
	if gimanaged:
		if db_unique_name is not None:
			remove_db = db_unique_name
		elif sid is not None and israc_[0][0] == 'YES':
			remove_db = db_name
		elif sid is not None and israc_[0][0] == 'NO':
			remove_db = sid
		else:
			remove_db = db_name
	else:
		if sid is not None:
			remove_db = sid
		else:
			remove_db = db_name

	command = "%s/bin/dbca -deleteDatabase -silent -sourceDB %s -sysDBAUserName sys -sysDBAPassword %s" % (oracle_home, remove_db, sys_password)
	(rc, stdout, stderr) = module.run_command(command)
	if rc != 0:
		msg = 'Removal of database %s failed: %s' % (db_name, stdout)
		module.fail_json(msg=msg, changed=False)
	else:
		if output == 'short':
			return True
		else:
			msg = 'STDOUT: %s,  COMMAND: %s' % (stdout, command)
			module.exit_json(msg=msg, changed=True)

def ensure_db_state (module,msg,oracle_home,db_name,db_unique_name,sid, archivelog, force_logging,supplemental_logging,
 					flashback, default_tablespace_type,default_tablespace,default_temp_tablespace, timezone):

	cursor = getconn(module,msg)
	israc = ''
	archcomp = ''
	flcomp = ''
	fbcomp = ''
	slcomp = ''
	alterdb_sql = 'alter database'

	propsql = "select lower(property_value) from database_properties where property_name in ('DEFAULT_TBS_TYPE','DEFAULT_PERMANENT_TABLESPACE','DEFAULT_TEMP_TABLESPACE') order by 1"
	tzsql = "select lower(property_value) from database_properties where property_name = 'DBTIMEZONE'"

	curr_time_zone = execute_sql_get(module,msg,cursor,tzsql)
	def_tbs_type,def_tbs,def_temp_tbs = execute_sql_get(module,msg,cursor,propsql)
	israc_sql = 'select parallel,instance_name,host_name from v$instance'
	israc_ = execute_sql_get(module,msg,cursor,israc_sql)
	instance_name = israc_[0][1]
	host_name = israc_[0][2]

	change_restart_sql = []
	change_db_sql = []
	log_check_sql = 'select log_mode,force_logging, flashback_on from v$database'
	log_check_ = execute_sql_get(module,msg,cursor,log_check_sql)

	if major_version >= '19.0':
		supp_log_check_sql = 'select SUPPLEMENTAL_LOG_DATA_MIN,SUPPLEMENTAL_LOG_DATA_PL,SUPPLEMENTAL_LOG_DATA_SR,SUPPLEMENTAL_LOG_DATA_PK,SUPPLEMENTAL_LOG_DATA_UI from v$database'
		supp_log_check_ = execute_sql_get(module,msg,cursor,supp_log_check_sql)
		if supp_log_check_[0][0] != slcomp:

			if supplemental_logging == True:
				slcomp = 'YES'
				slsql = alterdb_sql + ' add supplemental log data'
			else:
				slcomp = 'NO'
				slsql = alterdb_sql +  ' drop supplemental log data'

			change_db_sql.append(slsql)

	if israc_[0][0] == 'NO':
		israc = False
	else:
		israc = True

	if archivelog == True:
		archcomp = 'ARCHIVELOG'
		archsql = alterdb_sql + ' archivelog'
	else:
		archcomp = 'NOARCHIVELOG'
		archsql = alterdb_sql + ' noarchivelog'

	if force_logging == True:
		flcomp = 'YES'
		flsql = alterdb_sql + ' force logging'
	else:
		flcomp = 'NO'
		flsql = alterdb_sql +  ' no force logging'

	if flashback == True:
		fbcomp = 'YES'
		fbsql = alterdb_sql + ' flashback on'
	else:
		fbcomp = 'NO'
		fbsql = alterdb_sql +  ' flashback off'

	if def_tbs_type[0] != default_tablespace_type:
		deftbstypesql = 'alter database set default %s tablespace ' % (default_tablespace_type)
		change_db_sql.append(deftbstypesql)

	if default_tablespace is not None and def_tbs[0] != default_tablespace:
		deftbssql = 'alter database default tablespace %s' % (default_tablespace)
		change_db_sql.append(deftbssql)

	if default_temp_tablespace is not None and def_temp_tbs[0] != default_temp_tablespace:
		deftempsql = 'alter database default temporary tablespace %s' % (default_temp_tablespace)
		change_db_sql.append(deftempsql)

	if timezone is not None and curr_time_zone[0][0] != timezone:
		deftzsql = 'alter database set time_zone = \'%s\'' % (timezone)
		change_db_sql.append(deftzsql)

	if log_check_[0][0] != archcomp:
		change_restart_sql.append(archsql)

	if log_check_[0][1] != flcomp:
		change_db_sql.append(flsql)

	if log_check_[0][2] != fbcomp:
		change_db_sql.append(fbsql)

	if len(change_db_sql) > 0 or len(change_restart_sql) > 0:

		if log_check_[0][0] == 'ARCHIVELOG' and log_check_[0][2] == 'YES' and not archivelog and not flashback: # Flashback database needs to be turned off before archivelog is turned off

			if len(change_db_sql) > 0: # <- Apply changes that does not require a restart
				apply_norestart_changes(module,msg,change_db_sql)

			if len(change_restart_sql) > 0: # <- Apply changes that requires a restart
				apply_restart_changes(module,msg,oracle_home,db_name,db_unique_name,sid,instance_name,host_name,israc,archcomp,change_restart_sql)
		else:
			if len(change_restart_sql) > 0: # <- Apply changes that requires a restart
				apply_restart_changes(module,msg,oracle_home,db_name,db_unique_name,sid,instance_name,host_name,israc,archcomp,change_restart_sql)

			if len(change_db_sql) > 0: # <- Apply changes that does not require a restart
				apply_norestart_changes(module,msg,change_db_sql)


		msg = ('Database %s has been put in the intended state - Archivelog: %s, Force Logging: %s, Flashback: %s, Supplemental Logging: %s, Timezone: %s' %
				(db_name, archivelog,force_logging,flashback,supplemental_logging, timezone))
		module.exit_json(msg=msg, changed=True)
	else:
		if newdb:
			msg = 'Database %s successfully created created (%s) ' % (db_name,archcomp)
			if output == 'verbose':
				msg += ' ,'.join(verboselist)
			changed = True
		else:
			msg = ('Database %s already exists and is in the intended state - Archivelog: %s, Force Logging: %s, Flashback: %s, Supplemental Logging: %s, Timezone: %s' %
					(db_name, archivelog,force_logging,flashback, supplemental_logging, timezone))
			changed = False
		module.exit_json(msg=msg, changed=changed)


def apply_restart_changes(module,msg,oracle_home,db_name,db_unique_name,sid,instance_name,host_name,israc,archcomp,change_restart_sql):


	if stop_db(module,msg,oracle_home,db_name,db_unique_name,sid):
		if start_instance(module,msg,oracle_home,db_name, db_unique_name,sid,'mount', instance_name, host_name,israc):
			time.sleep(10) #<- To allow the DB to register with the listener
			cursor = getconn(module,msg)
			for sql in change_restart_sql:
				execute_sql(module,msg,cursor,sql)
				if stop_db(module,msg,oracle_home,db_name,db_unique_name,sid):
					start_db_state = start_db(module,msg,oracle_home,db_name,db_unique_name, sid)
					if start_db_state in ('ok', 'changed'):
						if newdb:
							msg = 'Database %s successfully created (%s) ' % (db_name, archcomp)
							if output == 'verbose':
								msg += ' ,'.join(verboselist)
							changed = True
						else:
							msg = 'Database %s has been put in the intended state - (%s) ' % (db_name,archcomp)
							if output == 'verbose':
								msg += ' ,'.join(verboselist)
							changed = True



def apply_norestart_changes(module,msg,change_db_sql):

	cursor = getconn(module,msg)
	for sql in change_db_sql:
		execute_sql(module,msg,cursor,sql)

def stop_db (module, msg, oracle_home, db_name, db_unique_name, sid):

	if gimanaged:
		if db_unique_name is not None:
			db_name = db_unique_name
		command = '%s/bin/srvctl stop database -d %s -o immediate' % (oracle_home,db_name)
		(rc, stdout, stderr) = module.run_command(command)
		if rc != 0:
			msg = 'Error - STDOUT: %s, STDERR: %s, COMMAND: %s' % (stdout, stderr, command)
			module.fail_json(msg=msg, changed=False)
		else:
			return True
	else:
		if sid is not None:
			os.environ['ORACLE_SID'] = sid
		else:
			os.environ['ORACLE_SID'] = db_name
		shutdown_sql = '''
		connect / as sysdba
		shutdown immediate;
		exit
		'''
		sqlplus_bin = '%s/bin/sqlplus' % (oracle_home)
		p = subprocess.Popen([sqlplus_bin,'/nolog'],stdin=subprocess.PIPE,
		stdout=subprocess.PIPE,stderr=subprocess.PIPE)
		(stdout,stderr) = p.communicate(shutdown_sql.encode('utf-8'))
		rc = p.returncode
		if rc != 0:
			msg = 'Error - STDOUT: %s, STDERR: %s, COMMAND: %s' % (stdout, stderr, shutdown_sql)
			module.fail_json(msg=msg, changed=False)
		else:
			return True


def start_db (module,msg, oracle_home, db_name, db_unique_name, sid):

	if gimanaged:
		if db_unique_name is not None:
			db_name = db_unique_name
		command = '%s/bin/srvctl status database -d %s' % (oracle_home,db_name)
		(rc, stdout, stderr) = module.run_command(command)
		if rc != 0:
			msg = 'Error - STDOUT: %s, STDERR: %s, COMMAND: %s' % (stdout, stderr, command)
			module.fail_json(msg=msg, changed=False)
		elif 'Database is running' in stdout:
			return 'ok'
		elif 'Database is not running' in stdout:

			command = '%s/bin/srvctl start database -d %s' % (oracle_home,db_name)
			(rc, stdout, stderr) = module.run_command(command)
			if rc != 0:
				msg = 'Error - STDOUT: %s, STDERR: %s, COMMAND: %s' % (stdout, stderr, command)
				module.fail_json(msg=msg, changed=False)
			else:
				return 'changed'
		else:
			msg = 'Error - STDOUT: %s, STDERR: %s, COMMAND: %s' % (stdout, stderr, command)
			module.fail_json(msg=msg, changed=False)
	else:
		if sid is not None:
			os.environ['ORACLE_SID'] = sid
		else:
			os.environ['ORACLE_SID'] = db_name

		startup_sql = '''
		connect / as sysdba
		startup;
		exit
		'''
		sqlplus_bin = '%s/bin/sqlplus' % (oracle_home)
		p = subprocess.Popen([sqlplus_bin,'/nolog'],stdin=subprocess.PIPE,
		stdout=subprocess.PIPE,stderr=subprocess.PIPE)
		(stdout,stderr) = p.communicate(startup_sql.encode('utf-8'))
		rc = p.returncode
		if rc != 0:
			msg = 'Error - STDOUT: %s, STDERR: %s, COMMAND: %s' % (stdout, stderr, startup_sql)
			module.fail_json(msg=msg, changed=False)
		else:
			return 'changed'


def start_instance (module,msg, oracle_home, db_name, db_unique_name,sid, open_mode, instance_name, host_name, israc):

	if gimanaged:
		if db_unique_name is not None:
			db_name = db_unique_name
		if israc:
			command = '%s/bin/srvctl start instance  -d %s -i %s' % (oracle_home, db_name, instance_name)
		else:
			command = '%s/bin/srvctl start database -d %s ' % (oracle_home, db_name)
		if open_mode is not None:
			command += ' -o %s ' %  (open_mode)
		(rc, stdout, stderr) = module.run_command(command)
		if rc != 0:
			msg = 'Error - STDOUT: %s, STDERR: %s, COMMAND: %s' % (stdout, stderr, command)
			module.fail_json(msg=msg, changed=False)
		else:
			return True
	else:
		if sid is not None:
			os.environ['ORACLE_SID'] = sid
		else:
			os.environ['ORACLE_SID'] = db_name

		startup_sql = '''
		connect / as sysdba
		startup mount;
		exit
		'''
		sqlplus_bin = '%s/bin/sqlplus' % (oracle_home)
		p = subprocess.Popen([sqlplus_bin,'/nolog'],stdin=subprocess.PIPE,
		stdout=subprocess.PIPE,stderr=subprocess.PIPE)
		(stdout,stderr) = p.communicate(startup_sql.encode('utf-8'))
		rc = p.returncode
		if rc != 0:
			msg = 'Error - STDOUT: %s, STDERR: %s, COMMAND: %s' % (stdout, stderr, shutdown_sql)
			module.fail_json(msg=msg, changed=False)
		else:
			return True


def execute_sql_get(module, msg, cursor, sql):

	try:
		cursor.execute(sql)
		result = (cursor.fetchall())
	except cx_Oracle.DatabaseError as exc:
		error, = exc.args
		msg = 'Something went wrong while executing sql_get - %s sql: %s' % (error.message, sql)
		module.fail_json(msg=msg, changed=False)
		return False
	return result

def execute_sql(module, msg, cursor, sql):

	try:
		cursor.execute(sql)
	except cx_Oracle.DatabaseError as exc:
		error, = exc.args
		msg = 'Something went wrong while executing sql - %s sql: %s' % (error.message, sql)
		module.fail_json(msg=msg, changed=False)
		return False
	return True

def getconn(module,msg):

	hostname = os.uname()[1]
	wallet_connect = '/@%s' % service_name
	try:
		if (not user and not password ): # If neither user or password is supplied, the use of an oracle wallet is assumed
			connect = wallet_connect
			conn = cx_Oracle.connect(wallet_connect, mode=cx_Oracle.SYSDBA)
		elif (user and password ):
			dsn = cx_Oracle.makedsn(host=hostname, port=port, service_name=service_name, )
			connect = dsn
			conn = cx_Oracle.connect(user, password, dsn, mode=cx_Oracle.SYSDBA)
		elif (not(user) or not(password)):
			module.fail_json(msg='Missing username or password for cx_Oracle')

	except cx_Oracle.DatabaseError as exc:
			error, = exc.args
			msg = 'Could not connect to database - %s, connect descriptor: %s' % (error.message, connect)
			module.fail_json(msg=msg, changed=False)

	cursor = conn.cursor()
	return cursor



def main():

	msg = ['']
	cursor = None
	global gimanaged
	global major_version
	global user
	global password
	global service_name
	global hostname
	global port
	global israc
	global newdb
	global output
	global verbosemsg
	global verboselist
	global domain
	verbosemsg = ''
	verboselist = []
	newdb = False

	module = AnsibleModule(
		argument_spec = dict(
			oracle_home         = dict(default=None, aliases = ['oh']),
			db_name             = dict(required=True, aliases = ['db','database_name','name']),
			sid                 = dict(required=False),
			db_unique_name      = dict(required=False, aliases = ['dbunqn','unique_name']),
			sys_password        = dict(required=False, no_log=True, aliases = ['syspw','sysdbapassword','sysdbapw']),
			system_password     = dict(required=False, no_log=True, aliases = ['systempw']),
			dbsnmp_password     = dict(required=False, no_log=True, aliases = ['dbsnmppw']),
			responsefile        = dict(required=False),
			template            = dict(default='General_Purpose.dbc'),
			cdb                 = dict(default=False, type='bool', aliases= ['container']),
			local_undo          = dict(default=True, type='bool'),
			datafile_dest       = dict(required=False, aliases= ['dfd']),
			recoveryfile_dest   = dict(required=False, aliases= ['rfd']),
			storage_type        = dict(default='FS', aliases= ['storage'],choices = ['FS','ASM']),
			dbconfig_type       = dict(default='SI',choices = ['SI','RAC','RACONENODE']),
			db_type             = dict(default='MULTIPURPOSE',choices = ['MULTIPURPOSE','DATA_WAREHOUSING','OLTP']),
			racone_service      = dict(required=False,aliases = ['ron_service']),
			characterset        = dict(default='AL32UTF8'),
			memory_percentage   = dict(required=False),
			memory_totalmb      = dict(default='1024'),
			nodelist            = dict(required=False, type='list'),
			amm                 = dict(default=False, type='bool', aliases = ['automatic_memory_management']),
			initparams          = dict(required=False, type='list'),
			customscripts       = dict(required=False, type='list'),
			default_tablespace_type  = dict(default='smallfile',choices = ['smallfile','bigfile']),
			default_tablespace  = dict(required=False),
			default_temp_tablespace  = dict(required=False),
			archivelog          = dict(default=False, type='bool'),
			force_logging       = dict(default=False, type='bool'),
			supplemental_logging       = dict(default=False, type='bool'),
			flashback           = dict(default=False, type='bool'),
			datapatch           = dict(default=True, type='bool'),
			domain	            = dict(required=False),
			timezone			= dict(required=False),
			output              = dict(default="short", choices = ["short","verbose"]),
			state               = dict(default="present", choices = ["present", "absent", "started"]),
			hostname            = dict(required=False, default = 'localhost', aliases = ['host']),
			port                = dict(required=False, default = 1521),



		),
		mutually_exclusive=[['memory_percentage', 'memory_totalmb']]
	)

	oracle_home         = module.params["oracle_home"]
	db_name             = module.params["db_name"]
	sid                 = module.params["sid"]
	db_unique_name      = module.params["db_unique_name"]
	sys_password        = module.params["sys_password"]
	system_password     = module.params["system_password"]
	dbsnmp_password     = module.params["dbsnmp_password"]
	responsefile        = module.params["responsefile"]
	template            = module.params["template"]
	cdb                 = module.params["cdb"]
	local_undo          = module.params["local_undo"]
	datafile_dest       = module.params["datafile_dest"]
	recoveryfile_dest   = module.params["recoveryfile_dest"]
	storage_type        = module.params["storage_type"]
	dbconfig_type       = module.params["dbconfig_type"]
	racone_service      = module.params["racone_service"]
	characterset        = module.params["characterset"]
	memory_percentage   = module.params["memory_percentage"]
	memory_totalmb      = module.params["memory_totalmb"]
	nodelist            = module.params["nodelist"]
	db_type             = module.params["db_type"]
	amm                 = module.params["amm"]
	initparams          = module.params["initparams"]
	customscripts       = module.params["customscripts"]
	default_tablespace_type = module.params["default_tablespace_type"]
	default_tablespace      = module.params["default_tablespace"]
	default_temp_tablespace = module.params["default_temp_tablespace"]
	archivelog          = module.params["archivelog"]
	force_logging       = module.params["force_logging"]
	supplemental_logging    = module.params["supplemental_logging"]
	flashback           = module.params["flashback"]
	datapatch           = module.params["datapatch"]
	domain              = module.params["domain"]
	timezone              = module.params["timezone"]
	output              = module.params["output"]
	state               = module.params["state"]
	hostname            = module.params["hostname"]
	port                = module.params["port"]


	#ld_library_path = '%s/lib' % (oracle_home)
	if oracle_home is not None:
		os.environ['ORACLE_HOME'] = oracle_home.rstrip('/')
		#os.environ['LD_LIBRARY_PATH'] = ld_library_path
	elif 'ORACLE_HOME' in os.environ:
		oracle_home     = os.environ['ORACLE_HOME']
		#ld_library_path = os.environ['LD_LIBRARY_PATH']
	else:
		msg = 'ORACLE_HOME variable not set. Please set it and re-run the command'
		module.fail_json(msg=msg, changed=False)

	if not cx_oracle_exists:
		msg = "The cx_Oracle module is required. 'pip install cx_Oracle' should do the trick. If cx_Oracle is installed, make sure ORACLE_HOME & LD_LIBRARY_PATH is set"
		module.fail_json(msg=msg)


	# Decide whether to use srvctl or sqlplus
	if os.path.exists('/etc/oracle/olr.loc'):
		gimanaged = True
	else:
		gimanaged = False
		if not cx_oracle_exists:
			msg = "The cx_Oracle module is required. 'pip install cx_Oracle' should do the trick. If cx_Oracle is installed, make sure ORACLE_HOME & LD_LIBRARY_PATH is set"
			module.fail_json(msg=msg)

	# Connection details for database
	user = 'sys'
	password = sys_password
	if db_unique_name is not None:
		service_name = db_unique_name
	else:
		service_name = db_name

	if domain is not None and domain != '':
		service_name = "%s.%s" % (service_name,domain)

	# Get the Oracle version
	major_version = get_version(module,msg,oracle_home)

	if state == 'started':
		msg = "oracle_home: %s db_name: %s sid: %s db_unique_name: %s" % (oracle_home, db_name, sid, db_unique_name)
		if not check_db_exists(module, msg, oracle_home,db_name, sid, db_unique_name):
			msg = "Database not found. %s" % msg
			module.fail_json(msg=msg, changed=False)
		else:
			start_db_state = start_db (module, msg, oracle_home, db_name, db_unique_name, sid)
			if start_db_state == 'changed':
				msg = "Database started."
				module.exit_json(msg=msg, changed=True)
			elif start_db_state == 'ok':
					msg = "Database already running."
					module.exit_json(msg=msg, changed=False)
			else:
				msg = "Startup failed. %s" % msg
				module.fail_json(msg=msg, changed=False)



	elif state == 'present':
		if not check_db_exists(module, msg, oracle_home,db_name, sid, db_unique_name):
			if create_db(module, msg, oracle_home, sys_password, system_password, dbsnmp_password, db_name, sid, db_unique_name, responsefile, template, cdb, local_undo, datafile_dest, recoveryfile_dest,
						storage_type, dbconfig_type, racone_service, characterset, memory_percentage, memory_totalmb, nodelist, db_type, amm, initparams, customscripts,datapatch, domain):
				newdb = True
				ensure_db_state (module,msg,oracle_home,db_name,db_unique_name,sid, archivelog, force_logging, supplemental_logging, flashback, default_tablespace_type,default_tablespace,default_temp_tablespace, timezone)
			else:
				module.fail_json(msg=msg, changed=False)
		else:
			ensure_db_state (module,msg,oracle_home,db_name,db_unique_name,sid, archivelog, force_logging, supplemental_logging, flashback, default_tablespace_type,default_tablespace,default_temp_tablespace, timezone)
			# msg = 'Database %s already exists' % (db_name)
			# module.exit_json(msg=msg, changed=False)

	elif state == 'absent':
		if check_db_exists(module, msg, oracle_home, db_name, sid, db_unique_name):
			if remove_db(module, msg, oracle_home, db_name, sid, db_unique_name, sys_password):
				msg = 'Successfully removed database %s' % (db_name)
				module.exit_json(msg=msg, changed=True)
			else:
				module.fail_json(msg=msg, changed=False)
		else:
			msg = 'Database %s doesn\'t exist' % (db_name)
			module.exit_json(msg=msg, changed=False)


	module.exit_json(msg="Unhandled exit", changed=False)




from ansible.module_utils.basic import *
if __name__ == '__main__':
	main()
